Heating-drum.



No. 690,055. Patented Dec. 3|, I90].

- C. B. HARRIS.

HEATING DRUM.

Application filed may 4, 1901.

(No Model.)

iTTullllm lllmll'm INVENTOR W A ftorney NTTnD STATES PATENT OFFICE.

CHARLES R. HARRIS, OF WILLIAMSPORT, PENNSYLVANIA.

HEATING-DRUM.

SPECIFICATION forming part of Letters Patent N 0. 690,055, datedDecember 31, 1901.

Application filed May 4, 1901. erial No. 58,776. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES R. HARRIS, of VVilliamsport, in the countyof Lycomin g and State of Pennsylvania, have invented certain new anduseful Improvements in Heating- Drums; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in heating-drums, the object ofthe invention being to produce a device adapted to be connected with astove or stovepipe which shall be neat and attractive in appearance andinexpensive to manufacture and which shall possess a largely-increasedradiating-surface over a cylindricaldrum of the same diameter.

With this end in View my invention consists in certain novel features ofconstruction and combinations of parts, as will be hereinafter morefully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 represents a perspective view ofmy improvement, and Fig. 2 is a View in vertical section of the same.

A represents my improved heating-drum, preferably constructed of thinsheet metal and of about the same gage as that used in the manufactureof ordinary stovepipes. The body of drum Ahas a general cylindricalform, its outer surface being made up of a series of hollow projectingribs 1, the latter being rounded or curved on their outer edges, and aseries of Vshaped corrugations or depressions 2, located between theribs 1. With the outer surface bent or shaped as above described it willbe seen that the interior of the drum presents a series ofinwardly-projecting V-shaped ribs 3 and a corresponding series ofcorrugations or depressions 5, the latter having curved outer wallscorresponding to the curvature of the outer faces or edges of theexternal ribs. The internal ribs 3 terminate before they reach thevertical center of the drum, and as they all extend inwardly the samedistance it will be seen that a central vertical passage-way from oneend of the drum to the other is formed, which passage-way is throughoutits entire length in open communication with the entire cavity of thedrum. Within this passage-way formed by the ribs 3 and near therespective ends of drum A are located theinverted-cone-shaped deflectors6, which latter are connected together by a rod 7 and are supportedagainst vertical movement by their frictional contact with said internalribs 3. is to deflect and spread the hot air and smoke as it comes fromthe stove into the several corrugations, so as to bring the hot airintimately into contact with the fluted surface of the drum.

The ends of the fluted drum above described are each provided with a cap8, shaped atits edge to conform to the fluted contour of the drum. Eachcap is provided with an inwardly-projecting flange 9, adapted to,

overlap the adjacent end of the body of the drum to prevent thesheet-metal body from undue expansion, and each is also provided with anoutwardly-projecting collar 10 for the attachment of sections ofstovepipe, the drum forming, in effect, a part of the smoke-pipe.

The cap at the upper end of the drum is provided with a damper 11,preferably having a series of slots 12 therein, which permit the passageat all times of a port-ion of the heat within the drum. By closing thedamper the heat will be retained to a large extent within the drum, theslots in the damper permitting the passing of sufflcient air to maintaina draft in the stove. By opening up the damper, which is always donewhen the fire is first started, the heated air and products ofcombustion pass more rapidly through the drum. While the caps 8 may besecured directly to the body of the drum by rivets or screws passingthrough the overlapping flanges of the caps and the ends of the body, Iprefer to lock them in place by rods 13, secured to the caps and passinglengthwise through the drum. These rods not only securely lock the capsand body together, but they also add rigidity to the drum.

In use one end of the drum A is connected with the pipe extending from astove or directly to the collar of the latter, as the case might be,while the other end is connected with the smoke-pipe. It might also beused to good advantage by attaching it to a stove- The object of thesedeflectors pipe where it passes through an upper room, thus radiating"into the upper room a large amount of heat.

From the foregoing it will be seen that I obtain a heating-drum in whichits radiatingsurface is greatly increased over the radiating-surface ofa cylindrical drum of the same diameter and one in which a direct draftis always possible without permitting-an undue escape of heat therefrom.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A heating drum, comprising a body made of sheet metal, of generalcylindrical form and having a fluted or corrugated surface, end caps,conforming in shape to the fluted body and having flanges overlappingthe ends of said body, and deflectors engaging the inner edges of theinternal ribs and held in place by contact with said ribs, substantiallyas set forth.

2. A heating --drum, comprising a sheetlnetal body of generalcylindrical form and having a fluted or corrugated surface, a centralchamber, deflectors in said central chamber and engaging the ribsforming the wall thereof, end caps, shaped to conform to the fluted bodyand having flanges overlapping the ends of said body and tie-rodspassing through flanges of the caps and transverselythrough'protuberances forming the fluted or corrugated surface of thebody.

In testimony whereof I have signed this specification in the presenceoftwo subscribing witnesses. v v

' CHARLES R. HARRIS. Witnesses:

H. S. G. MCCARTNEY, H. A. LADD.

